三牙轮钻头牙齿破岩的破碎坑几何建模与分析  

Geometric Modeling and Analyzing of Recess by Tri-cone Bit Teeth

作　　者：肖德栋[1] 邓嵘[1] 陈雪娟[1] 陈森强[2] 

机构地区：[1]西南石油大学,成都610500 [2]新疆石油管理局钻井工艺研究院,新疆克拉玛依834000

出　　处：《石油矿场机械》2008年第9期40-43,共4页Oil Field Equipment

基　　金：石油天然气装备教育部重点试验室资助(2006STS02)

摘　　要：岩石在钻头牙齿作用下形成的各种破碎坑和井底的测量与分析是钻头试验技术中的重要环节,也是研究钻头破岩机理和评价破岩效率的重要手段。以三牙轮钻头上单齿圈为对象进行试验,研究钻头破碎岩石后得到的破碎坑。针对不同岩石、不同齿形的硬质合金牙齿,进行了大量的牙齿刮切破岩试验,并利用逆向工程软件对试验数据进行整理计算。以勺形齿和楔形齿为例提出了牙齿刮切破碎坑几何模型的建模过程,并简要介绍了获取破碎坑几何模型特征参数的方法。The measurement and analysis of recess by tri-cone bit teeth and bottom-hole pattern is an important link of drilling test, a key means of studying rock-breaking mechanism, and valuating rock-breaking efficiency. The experiment used single tooth rim on tri-cone bit as object to study the recess obtained from the bits breaking rock. This article preceded a great deal of cutting teeth scraping rock-breaking experiment in view of different rocks, different carbide teeth, and collated data by using of reverse engineering of software. Geometry modeling process of the teeth scraping broken recess were proposed which takes spoon-shaped teeth and wedge-shaped teeth as examples, and made a brief introduction on how to gain access of broken graves geometric modeling.

关 键 词：三牙轮钻头 破碎坑 几何模型 

分 类 号：TE921.102[石油与天然气工程—石油机械设备]